Nikitin, A. V., and I. V. Samoilenko. 2017. “Differential Equations With Small Stochastic Summands under the Levy Approximating Conditions”. Ukrains’kyi Matematychnyi Zhurnal 69 (9), 1242-49. https://umj.imath.kiev.ua/index.php/umj/article/view/1774.